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Add fast paths for hasProperty internal method (#407)

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Also the Object.[[Get]] method is modified to follow the standard requirements without recursion.

Signed-off-by: Robert Fancsik <frobert@inf.u-szeged.hu>
This commit is contained in:
Robert Fancsik 2019-09-03 10:14:03 +02:00 • committed by Boram Bae
commit 1df4dcd1a8
10 changed files with 86 additions and 11 deletions
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26
src/runtime/Object.cpp
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@ -838,21 +838,25 @@ ValueVector Object::ownPropertyKeys(ExecutionState& state)
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinary-object-internal-methods-and-internal-slots-get-p-receiver
ObjectGetResult Object::get(ExecutionState& state, const ObjectPropertyName& propertyName)
{
Object* temp = this;
auto desc = this->getOwnProperty(state, propertyName);
Object* iter = this;
while (true) {
if (!desc.hasValue()) {
Object* parent = temp->getPrototypeObject(state);
if (!parent) {
return ObjectGetResult();
}
desc = parent->getOwnProperty(state, propertyName);
temp = parent;
} else {
ObjectGetResult desc = iter->getOwnProperty(state, propertyName);
if (desc.hasValue()) {
return desc;
}
iter = iter->getPrototypeObject(state);
if (iter == nullptr) {
break;
}
if (UNLIKELY(iter->isProxyObject())) {
return iter->get(state, propertyName);
}
}
return desc;
return ObjectGetResult();
}
// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinary-object-internal-methods-and-internal-slots-set-p-v-receiver